Top Front End Developer Jobs in Bucharest

Drive end-to-end product development for iTero 3D imaging systems by translating clinical needs into software requirements, leading cross-functional agile teams, driving ML diagnostic initiatives from PoC to productization, analyzing clinical usage data for improvements, and embedding customer feedback into product decisions to enhance usability, performance, and clinical value.

Develop and maintain front-end applications using modern web technologies and web components. Focus on UX, performance, TDD, unit/integration testing, and collaborate on design and technical decisions. Improve components, follow coding and security standards, and contribute to CI/CD and deployment pipelines.

Implement pixel‑perfect, responsive, and accessible UIs from Figma; convert designs to semantic HTML5, CSS/SCSS and JavaScript; build reusable UI components and design systems; optimize performance (lazy loading, code splitting, dynamic imports, bundle analysis); apply SSR/SSG/ISR where appropriate; ensure cross‑browser compatibility and WCAG accessibility; integrate with REST APIs; write automated tests and documentation; participate in code reviews and maintain front‑end architecture quality.

Build and maintain reusable front-end components (Web Components / LitHTML) and JavaScript-based journeys for ING's developer portal and transaction download UI. Collaborate with back-end engineers, ensure accessibility, security, and performance, improve test automation and CI/CD, mentor colleagues, and support the full DevOps lifecycle within an Agile squad.

The Senior Associate Frontend Web Developer will enhance the LSEG web platform using Angular, collaborate with teams, and ensure high-quality solutions.

Architect, build, and maintain micro-frontends, public websites and web apps for the Rainbow Six Siege esports ecosystem. Own technical design, ensure performance, scalability and maintainability while collaborating with product, UX, and game teams.

Develop and maintain modern, scalable frontend applications using React and TypeScript; build responsive, accessible (WCAG 2.1) UIs; collaborate with cross-functional teams; write clean, tested code (unit/integration/TDD); perform code reviews; work with REST APIs and CI/CD workflows; contribute to frontend best practices and technical improvements.

Develop and maintain React-based single-page application UI components using JavaScript/TypeScript, HTML/CSS. Convert Figma designs into reusable components, optimize performance and scalability, collaborate with design and backend teams, enforce code quality through reviews, and lead automated and visual-regression testing with Cypress/Playwright/Storybook.

As an AI-First Frontend Engineer, you will develop high-performance, AI-integrated user interfaces for telehealth applications, manage team workflows, and optimize web performance.

Join Cerebras Systems to optimize and develop frontend compiler infrastructure for PyTorch models on their unique wafer-scale AI platform, focusing on model representation and optimization.

Design, build, and maintain responsive, performant front-end applications and reusable components. Collaborate with UX designers and back-end developers, integrate RESTful APIs, optimize performance, maintain build tooling and deployment pipelines, ensure cross-browser compatibility, and contribute to testing and code reviews.

Lead frontend development within a micro-frontend architecture, modernize an ExtJS-based application, design scalable accessible UI components, collaborate on API-first/BFF integrations, ensure code quality via TDD and automated testing, support CI/CD and Docker deployments, and drive performance, accessibility, SEO, and architectural decisions during and after a supplier-to-insourcing transition.

Design and maintain a modular, high-performance frontend: implement a pixel-perfect design system, optimize rendering and bundle sizes, architect client-side state for real-time data, integrate complex APIs, and ensure global availability and operational readiness for a Web3 consumer platform.

The Senior Frontend Engineer will design and build high-performance applications, mentor junior engineers, and collaborate with teams to enhance the LSEG Workspace platform.

Build, test, and optimize responsive web applications using Next.js and React. Collaborate with designers and back-end engineers to implement high-performance, cross-browser UIs, manage state with Redux/Context API, integrate RESTful APIs, and debug front-end issues while following best practices and maintaining clean, scalable code in a remote team.

Design, develop, and maintain high-quality React applications, lead technical decisions, mentor engineers, and optimize performance in a fast-paced environment.

Build and maintain modern dashboard UIs using React and TypeScript. Implement canvas-based generative AI pipelines, integrate async pipelines via WebSockets, ensure performance for large media datasets, shape UX decisions, and define data contracts with backend teams.

Build and maintain responsive, high-performance user interfaces using React and modern front-end technologies. Translate UI/UX designs into reusable code, integrate with backend APIs, optimize performance and cross-browser compatibility, and contribute to testing, code reviews, and engineering best practices in a product-driven, remote environment.

Design, develop, and maintain large-scale Angular applications using NGRX and RxJS. Implement best practices for performance, responsiveness, and cross-browser support. Integrate with backend RESTful APIs, participate in code reviews, mentor junior developers, and write clean, testable code.

Design, build, and maintain consumer-facing features across web (React) and mobile (React Native). Own product lifecycle from discovery through release, monitoring, experimentation, and iteration. Drive A/B testing and feature-flag strategies, make architectural decisions, ensure accessibility/performance/testability, mentor engineers, and collaborate with Product, Design, Data, and Platform teams.

Own and ship frontend features end-to-end with a product mindset: onboarding, activation, dashboards, and billing UI. Build AI-first experiences, instrument features (analytics, events, dashboards), run A/B experiments, collaborate with backend and cross-functional teams, mentor engineers, and maintain clean, well-tested React code.

Design and implement high-performance, data-rich frontend features using React and TypeScript. Co-own frontend architecture, component design, and state management. Collaborate with product, design, and backend teams to improve data visualization and user diagnostics. Ship production code quickly, leverage AI tools to accelerate development, and mentor engineers while promoting frontend best practices and testing.

Serve as a senior Java full-stack engineer building and maintaining backend services for blockchain applications, integrate APIs with React/Vue frontends, design scalable enterprise blockchain solutions, troubleshoot complex backend issues, and collaborate with cross-functional teams to apply best practices.

The role involves building creative tools for content editing, enhancing features with PixiJS and WebGL, and improving collaboration workflows.

Join Dragonfly's talent network as a Senior Frontend Engineer. Connect with global portfolio companies in the crypto ecosystem.